added PageTop component, markdown styles, white background on logo svg, and documentation comments

utils/newsCard.ts

@@ -0,0 +1,18 @@
+/**
+ * Type for NewsCard component
+ * @module utils/newsCard
+ */
+
+import type { NewsEntry } from "./news";
+
+/**
+ * Interface that defines property for NewsCard component
+ * @property {NewsEntry} newsEntry Data of news
+ * @property {boolean} isNew Mark the entry new
+ */
+interface NewsCardProperty {
+    newsEntry: NewsEntry;
+    isNew: boolean;
+}
+
+export type { NewsCardProperty };